*{
	margin: 0;
	padding: 0;
	box-sizing: border-box;
}
li{
	list-style:none;
}
.container{
	width: 400px;
    margin: 50px auto;
    /*border: 1px solid #000;*/
   /*background: #eee;*/
}
.nav{
	height: 50px;
    overflow: hidden;
}
.nav li{
	float: left;
	width:100px;
	text-align: center;
	line-height:49px;
	cursor: pointer;
}
.nav .a{
	border-bottom: 1px solid orange;
	color: orange;
}
.main{
	position: relative;
}
.main li{
	width: 400px;
	height: 100px;
	position: absolute;
	padding-top:20px ;
	overflow: hidden;
	display: none;
}
.main li p{
	color: #FFA500;
}
.main li span{
	padding-top: 5px;
}
.l{ 
	float: left;
}
.r{
	float: right;
}
.main li span:hover{
	color: #FFA500;
	cursor: pointer;
}
.main .a:first-child{
	display: block;
}
